Assembly tool for axial flux motor rotor magnetic steel

Abstract

The utility model belongs to the technical field of motor rotor assembly, and discloses an assembly tool for axial flux motor rotor magnetic steel, which comprises an upper guide plate, a mounting plate and a lower guide plate which are sleeved on the outer surface of a rotor mandrel, and the mounting plate is positioned between the upper guide plate and the lower guide plate. The upper face and the lower face of the installation plate are connected with the upper guide plate and the lower guide plate in an abutting mode respectively, a plurality of magnetic steel grooves are formed in the installation plate in an annular array mode, corresponding magnetic steel is placed in the magnetic steel grooves, and one side face of each magnetic steel is fixedly connected with a locking plate used for locking the upper guide plate, the lower guide plate and the magnetic steel. The locking plates are fixedly installed at the corresponding positions of the upper guide plate and the lower guide plate through bolt sets at the same time. The motor rotor is simple in overall structure, can improve the installation precision and the working efficiency, avoids the problem of assembly difficulty caused by the acting force between the rotor magnetic steels, and improves the use effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor rotor assembly, and in particular relates to an assembly tool for axial flux motor rotor magnetic steel. Background Art

[0002] With the rise of electric vehicles in my country in recent years, motors, as one of the core components of new energy vehicles, have increasingly demanded higher performance, efficiency, and lightweighting. Axial flux motors, with their advantages of small size, light weight, high torque density, and high efficiency, have gradually become a research hotspot and application trend in the new energy vehicle field.

[0003] High-power axial flux motors utilize flat magnets with strong magnetic force. Axial flux motors are typically short in the axial direction and large in the radial direction. Traditional axial flux motor magnets are typically mounted on the rotor, bonded to the rotor disc surface to form the rotor assembly. Using traditional mounting methods, the strong forces between the magnets make installation difficult, potentially damaging the magnets and causing injuries. Utility Model Content

[0004] The main technical problem to be solved by the present invention is to provide an assembly tool for the rotor magnets of an axial flux motor. Through the guide structure, the installation accuracy and work efficiency are greatly improved, and the assembly difficulty caused by the force between the rotor magnets is avoided, thereby further improving the safety of the assembly process.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An assembly tool for the rotor magnets of an axial flux motor comprises an upper guide plate, a mounting plate and a lower guide plate sleeved on the outer surface of the rotor core shaft, the mounting plate being located between the upper guide plate and the lower guide plate, the upper and lower surfaces of the mounting plate being respectively in contact with the upper guide plate and the lower guide plate, a plurality of magnetic steel grooves are provided in an annular array on the mounting plate, corresponding magnetic steels are placed in the magnetic steel grooves, and a locking plate for locking the upper guide plate, the lower guide plate and the magnetic steel is fixedly connected to one side surface of each of the plurality of magnetic steels, and the locking plate is fixedly installed on the corresponding positions of the upper guide plate and the lower guide plate by a bolt group.

[0007] The following is a further optimization of the above technical solution by the present invention:

[0008] A first mounting hole is provided at the middle of the upper guide plate, and a plurality of upper clamping blocks are provided at positions on the upper guide plate corresponding to the magnetic steel slots.

[0009] Further optimization: A first threaded hole is provided on the outer surface of the upper clamping block at a position corresponding to the locking plate.

[0010] Further optimization: a second mounting hole is opened at the middle position of the lower guide plate, and a plurality of lower clamping blocks are provided at positions on the lower guide plate corresponding to the magnetic steel slots.

[0011] Further optimization: a second threaded hole is opened on the outer surface of the lower clamping block at a position corresponding to the first threaded hole.

[0012] Further optimization: the shape and size of the lower clamping block and the upper clamping block match the magnetic steel.

[0013] Further optimization: a mounting sleeve is provided at the middle position of the mounting plate.

[0014] Further optimization: a first through hole is opened on the locking plate at a position corresponding to the first threaded hole, a second through hole is opened on the locking plate at a position corresponding to the second threaded hole, and a third threaded hole is opened on the locking plate between the first through hole and the second through hole.

[0015] Further optimization: a fourth threaded hole is provided on the outer surface of the magnetic steel at a position corresponding to the third threaded hole.

[0016] Further optimization: the bolt group includes a first bolt that passes through the first through hole and is threadedly connected to the first threaded hole, the third threaded hole and the fourth threaded hole are threadedly connected with the same second bolt, the second threaded hole is threaded with a third bolt, and the third bolt passes through the second through hole at the same time.

[0017] The assembly tooling for the axial flux motor rotor magnets installs the magnets in a radial installation manner. During the installation process, the magnets are first guided through the magnet grooves. After the magnets are installed, the bolt group is tightened to fix and clamp one magnet, and then other magnets are installed. During this period, there is no repulsive force between the magnets, and there is radial attraction, which makes it easy and convenient to assemble the magnets. At the same time, under the action of the locking plate, the glue on the surface of the magnets is ensured to be securely solidified.

[0018] In addition, the shape and size of the magnetic steel slot match the magnetic steel, which improves the assembly accuracy of the magnetic steel during the installation process, solves the problem of insufficient traditional precision, and ensures the working stability of the motor rotor.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the overall structure in the embodiment of the utility model;

[0022] Figure 3This is a structural diagram of the upper guide plate in an embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of the lower guide plate in an embodiment of the present utility model;

[0024] Figure 5 Schematic diagram of the structure of the locking plate in the embodiment of the present utility model.

[0025] In the figure: 1-rotor core shaft; 2-upper guide plate; 21-upper clamping block; 22-first threaded hole; 23-first mounting hole; 3-mounting plate; 31-mounting sleeve; 32-magnetic steel slot; 4-lower guide plate; 41-lower clamping block; 42-second threaded hole; 43-second mounting hole; 5-locking plate; 51-first through hole; 52-third threaded hole; 53-second through hole; 6-bolt group; 61-first bolt; 62-second bolt; 63-third bolt; 7-magnet; 71-fourth threaded hole. DETAILED DESCRIPTION

[0026] like Figure 1-5 As shown: An assembly tool for the rotor magnet of an axial flux motor, comprising an upper guide plate 2, a mounting plate 3 and a lower guide plate 4 sleeved on the outer surface of the rotor core shaft 1, the mounting plate 3 being located between the upper guide plate 2 and the lower guide plate 4, the upper and lower surfaces of the mounting plate 3 being respectively in contact with the upper guide plate 2 and the lower guide plate 4, a plurality of magnetic steel grooves 32 are provided in an annular array on the mounting plate 3, corresponding magnetic steels 7 are placed in the magnetic steel grooves 32, and a locking plate 5 for locking the upper guide plate 2, the lower guide plate 4 and the magnetic steel 7 is fixedly connected to one side surface of the plurality of magnetic steels 7, and the locking plate 5 is fixedly installed on the corresponding positions of the upper guide plate 2 and the lower guide plate 4 by a bolt group 6.

[0027] In this embodiment, the upper guide plate 2, the mounting plate 3 and the lower guide plate 4 are all configured to be circular.

[0028] like Figure 3 As shown, a first mounting hole 23 is opened at the middle position of the upper guide plate 2 , and the upper guide plate 2 is fixedly mounted on the outer surface of the rotor core shaft 1 through the first mounting hole 23 .

[0029] A plurality of upper clamping blocks 21 are provided at positions on the upper guide plate 2 corresponding to the magnetic steel grooves 32 , that is, the plurality of upper clamping blocks 21 are arranged in a ring array with the center of the upper guide plate 2 as the center.

[0030] A first threaded hole 22 is formed on the outer surface of the upper clamping block 21 at a position corresponding to the locking plate 5 .

[0031] like Figure 4 As shown, a second mounting hole 43 is opened at the middle position of the lower guide plate 4 , and the lower guide plate 4 is fixedly mounted on the outer surface of the rotor core shaft 1 through the second mounting hole 43 .

[0032] A plurality of lower clamping blocks 41 are provided at positions on the lower guide plate 4 corresponding to the magnetic steel slots 32 , that is, the plurality of lower clamping blocks 41 are arranged in a ring array with the center of the lower guide plate 4 as the center.

[0033] The shapes and sizes of the lower clamping block 41 and the upper clamping block 21 match those of the magnetic steel 7 .

[0034] A second threaded hole 42 is formed on the outer surface of the lower clamping block 41 at a position corresponding to the first threaded hole 22 .

[0035] In this embodiment, the first threaded hole 22 and the second threaded hole 42 have the same size.

[0036] like Figure 2 As shown, a mounting sleeve 31 is provided at the middle position of the mounting plate 3 , and the middle of the mounting sleeve 31 is fixedly mounted on the outer surface of the rotor core shaft 1 via a flat key.

[0037] like Figure 5 As shown, a first through hole 51 is formed on the locking plate 5 at a position corresponding to the first threaded hole 22 .

[0038] A second through hole 53 is formed on the locking plate 5 at a position corresponding to the second threaded hole 42 .

[0039] The first through hole 51 and the second through hole 53 have the same size.

[0040] The locking plate 5 defines a third threaded hole 52 between the first through hole 51 and the second through hole 53 .

[0041] A fourth threaded hole 71 is formed on the outer surface of the magnetic steel 7 at a position corresponding to the third threaded hole 52 .

[0042] The bolt assembly 6 includes a first bolt 61 that passes through the first through hole 51 and is then threadedly connected to the first threaded hole 22 .

[0043] The third threaded hole 52 and the fourth threaded hole 71 are threadedly connected with a second bolt 62 .

[0044] A third bolt 63 is threadedly connected to the second threaded hole 42 , and the third bolt 63 also passes through the second through hole 53 .

[0045] When the assembly tooling of the axial flux motor rotor magnet is used, the mounting plate 3 is first fixedly installed on the outer surface of the rotor core shaft 1, the upper guide plate 2 is sleeved on the outer surface of the rotor core shaft 1 and then fixed to one side of the mounting plate 3 by bolts, and the lower guide plate 4 is sleeved on the outer surface of the rotor core shaft 1 and then fixed to the other side of the mounting plate 3 by bolts.

[0046] The second bolt 62 is then threadedly connected to the third threaded hole 52 of the locking plate 5 , passes through the third threaded hole 52 , and is then threadedly connected to the fourth threaded hole 71 of the magnet 7 .

[0047] In this way, the magnet 7 is pre-fixed and installed on the locking plate 5, and then glue is applied to both surfaces of the magnet 7. The locking plate 5 drives the glue-coated magnet 7 to be inserted into the magnet groove 32 along the radial direction of the mounting plate 3. Under the action of the magnet groove 32, the magnet 7 is guided, and the first through hole 51 and the second through hole 53 on the locking plate 5 are respectively aligned with the first threaded hole 22 and the second threaded hole 42.

[0048] Finally, the first bolt 61 is passed through the first through hole 51 and screwed into the first threaded hole 22 for locking. The third bolt 63 is passed through the second through hole 53 and screwed into the second threaded hole 42 for locking. The second bolt 62 is locked. During the locking process, the upper clamping block 21 and the lower clamping block 41 clamp the magnet 7 at the same time to facilitate curing, thereby completing the assembly of a magnet 7.

[0049] According to this process, the remaining magnetic steels 7 are assembled.

[0050] By adopting this radial assembly method of the magnetic steels 7 , there is no repulsive force between the magnetic steels 7 , and radial attraction is provided, so that the assembly of the magnetic steels 7 can be easily completed.

[0051] For ordinary technicians in this field, based on the teachings of this utility model, without departing from the principles and spirit of this utility model, changes, modifications, replacements and deformations made to the implementation methods are still within the scope of protection of this utility model.

Claims

1. An assembly tool for an axial flux motor rotor magnet, comprising an upper guide plate (2), a mounting plate (3) and a lower guide plate (4) sleeved on the outer surface of a rotor core shaft (1), characterized in that: The mounting plate (3) is located between the upper guide plate (2) and the lower guide plate (4), and the upper and lower surfaces of the mounting plate (3) are respectively connected to the upper guide plate (2) and the lower guide plate (4). The mounting plate (3) has a plurality of magnetic steel grooves (32) in a circular array, and corresponding magnetic steels (7) are placed in the magnetic steel grooves (32). A locking plate (5) for locking the upper guide plate (2), the lower guide plate (4) and the magnetic steel (7) is fixedly connected on one side of the plurality of magnetic steels (7). The locking plate (5) is fixedly mounted on the corresponding positions of the upper guide plate (2) and the lower guide plate (4) through a bolt group (6).

2. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 1, characterized in that: A first mounting hole (23) is provided at a middle position of the upper guide plate (2), and a plurality of upper clamping blocks (21) are provided at positions on the upper guide plate (2) corresponding to the magnetic steel slots (32).

3. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 2, characterized in that: A first threaded hole (22) is provided on the outer surface of the upper clamping block (21) at a position corresponding to the locking plate (5).

4. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 3, characterized in that: A second mounting hole (43) is provided at a middle position of the lower guide plate (4), and a plurality of lower clamping blocks (41) are provided at positions on the lower guide plate (4) corresponding to the magnetic steel slots (32).

5. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 4, characterized in that: A second threaded hole (42) is provided on the outer surface of the lower clamping block (41) at a position corresponding to the first threaded hole (22).

6. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 5, characterized in that: The shapes and sizes of the lower clamping block (41) and the upper clamping block (21) match those of the magnetic steel (7).

7. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 6, characterized in that: A mounting sleeve (31) is provided at the middle position of the mounting plate (3).

8. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 7, characterized in that: A first through hole (51) is provided on the locking plate (5) at a position corresponding to the first threaded hole (22), a second through hole (53) is provided on the locking plate (5) at a position corresponding to the second threaded hole (42), and a third threaded hole (52) is provided on the locking plate (5) between the first through hole (51) and the second through hole (53).

9. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 8, characterized in that: A fourth threaded hole (71) is provided on the outer surface of the magnetic steel (7) at a position corresponding to the third threaded hole (52).

10. The assembly tool for the rotor magnetic steel of an axial flux motor according to claim 9, characterized in that: The bolt assembly (6) comprises a first bolt (61) that passes through the first through hole (51) and is then threadedly connected to the first threaded hole (22); a second bolt (62) is threadedly connected to the third threaded hole (52) and the fourth threaded hole (71); a third bolt (63) is threadedly connected to the second threaded hole (42); and the third bolt (63) simultaneously passes through the second through hole (53).

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